OMNIWeb Plus Browser
Interface to produce plots, listings or output files
Data are from the STEREO-A IMPACT High Energy Telescope (HET) experiment. Each record contains 1-hour averaged fluxes of electrons and protons in the energy channels shown below. and the Poisson uncertainties [Flux/SQRT(N)] in these fluxes.
The monthly files of this ASCII data set may be accessed from   and    SPDF FTP

Time span: 2006-12-01 - 2023-05-15
     Note: There is a big gap at 2015 year: from 03/21 to 06/30;

Select an activity
Plot data Show unc.
(for non-zero values only)
List data Create file (file?)
For Stack plot click HERE

Enter start and stop dates: year,month,day(YYYYMMDD) or year,day_of_year(YYYYDOY)
   Start time    Stop time
Fluxes are given in 1/(sec-cm**2-ster-MeV/n );
Fluxes   (Numbers below are min/max energies in MeV/n)
0.7-1.4Flx   Unc
1.4-2.8Flx   Unc
2.8-4.0Flx   Unc
13.6-15.1Flx   Unc
14.9-17.1Flx   Unc
17.0-19.3Flx   Unc
20.8-23.8Flx   Unc
23.8-26.4Flx   Unc
26.3-29.7Flx   Unc
29.5-33.4Flx   Unc
33.4-35.8Flx   Unc
35.5-40.5Flx   Unc
40.0-60.0Flx   Unc
60.0-100.0Flx   Unc

*Advanced plot selections (optional)
Y-axis Scale: Character size(0.5-2.0):
Plot Symbol: Symbol Size(0.1-4.0): Image size (pixels) X: Y:

If you have any questions/comments about the OMNWeb Plus, contact Dr. Natalia Papitashvili,Mail Code 672, NASA/Goddard Space Flight Center, Greenbelt, MD 20771

NASA Official: Robert Candey (, Head of the Space Physics Data Facility